On Saturday, September 11, 2010, the Construction Site Open Day at Sigirino once again attracted many interested people. The approximately 6,700 visitors informed themselves on site about the state of work on the Ceneri Base Tunnel.
Sizeable numbers already arrived in the morning: almost 7,000 people from all over Switzerland and Lombardy visited the AlpTransit construction site at Sigirino. On a walk round the construction site, the visitors had the opportunity to inspect the state of the work at Sigirino. The main attraction was the visit to the cavern system (CAOP), the central logistical point for work on the Ceneri Base Tunnel. At various information stands the responsible representatives of AlpTransit Gotthard Ltd., the local construction management, and others involved in the project provided information.
The Canton of Ticino radio station Rete Uno (RSI) transmitted live from the construction site. The radio team accompanied the visitors throughout the day and broadcast a special programme on the New Rail Link Through the Alps.
With a length of 15.4 km between the north portal at Vigana, near Camorino, and the south portal at Vezia, near Lugano, after the Gotthard and Lötschberg Base Tunnels the Ceneri Base Tunnel is Switzerland's third-largest tunnel project. Only with the Ceneri Base Tunnel as the logical continuation and extension of the Gotthard Base Tunnel will the new Gotthard line become a continuous flat route through the Alps. The Ceneri Base Tunnel is scheduled to become operational in 2019.